124331213 has 4 divisors (see below), whose sum is σ = 124707168. Its totient is φ = 123955260.

The previous prime is 124331209. The next prime is 124331219. The reversal of 124331213 is 312133421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 124331213 - 2² = 124331209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124331219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187481 + ... + 188142.

It is an arithmetic number, because the mean of its divisors is an integer number (31176792).

Almost surely, 2^124331213 is an apocalyptic number.

It is an amenable number.

124331213 is a deficient number, since it is larger than the sum of its proper divisors (375955).

124331213 is an equidigital number, since it uses as much as digits as its factorization.

124331213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375954.

The product of its digits is 432, while the sum is 20.

The square root of 124331213 is about 11150.3907106433. The cubic root of 124331213 is about 499.1066889412.

Adding to 124331213 its reverse (312133421), we get a palindrome (436464634).

The spelling of 124331213 in words is "one hundred twenty-four million, three hundred thirty-one thousand, two hundred thirteen".